- #1
Xiox
- 15
- 0
Hi, I'm new into this subject.
I'm trying to understand how a low pass filter (where the frequency f is from 0 Hz to [tex] f_u [/tex] ) for a speacker is working. The fuction for the low pass filter is [tex]\mid H \mid = U_out / U_in[/tex], that is
[tex]\mid H \mid = R / \sqrt{R^2 + ( \omega L )^2}[/tex]
where
[tex] \omega = 2 \pi f [/tex]
That I don't really understand is how [tex]f \rightarrow 0 \Rightarrow \mid H \mid \rightarrow 1 = \mid H \mid_max [/tex] (f is the frequency) and [tex]f \rightarrow \infty \Rightarrow \mid H \mid \rightarrow 0 [/tex]. I believe that I would need a graph.
I'm trying to understand how a low pass filter (where the frequency f is from 0 Hz to [tex] f_u [/tex] ) for a speacker is working. The fuction for the low pass filter is [tex]\mid H \mid = U_out / U_in[/tex], that is
[tex]\mid H \mid = R / \sqrt{R^2 + ( \omega L )^2}[/tex]
where
[tex] \omega = 2 \pi f [/tex]
That I don't really understand is how [tex]f \rightarrow 0 \Rightarrow \mid H \mid \rightarrow 1 = \mid H \mid_max [/tex] (f is the frequency) and [tex]f \rightarrow \infty \Rightarrow \mid H \mid \rightarrow 0 [/tex]. I believe that I would need a graph.
Last edited: